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Vanilla insignis Ames. (Orchidaceae): morphological variation of the labellum in Quintana Roo, Mexico

Published online by Cambridge University Press:  01 September 2023

B. Edgar Herrera-Cabrera*
Affiliation:
Postgrado en Estrategias para el Desarrollo Agrícola Regional, Colegio de Postgraduados - Campus Puebla, Boulevard Forjadores No 205 Santiago Momoxpan, Puebla. C.P. 72760, México
Néstor Hernández-Silva
Affiliation:
Universidad del Istmo, Campus Tehuantepec, Ciudad Universitaria S/N, Barrio Santa Cruz, 4ª Sección Sto. Domingo Tehuantepec, Oaxaca C.P. 70760, México
Adriana Delgado-Alvarado
Affiliation:
Postgrado en Estrategias para el Desarrollo Agrícola Regional, Colegio de Postgraduados - Campus Puebla, Boulevard Forjadores No 205 Santiago Momoxpan, Puebla. C.P. 72760, México
Agustín Maceda
Affiliation:
Instituto de Biología, Universidad Nacional Autónoma de México, 04510 Ciudad de Mexico, México
*
Corresponding author: B. Edgar Herrera-Cabrera; Email: behc@colpos.mx

Abstract

The shape of the flower can vary based on the type of pollinator or the environment in which the plant develops. In Vanilla insignis, there are no studies that analyse the shape of the labellum of the flower as has been done in V. planifolia. Therefore, the study aimed to determine the variation in the shape of the labellum of V. insignis through a morphometric analysis in different environmental conditions in the state of Quintana Roo, Mexico. The results showed that there were significant differences in the variables analysed. Principal component analysis and dendrogram analysis reveal that four V. insignis morphotypes were possibly associated with soil water availability conditions because there were significant differences between the variables that define the apical region. In addition, the distribution of the morphotypes corresponded with the presence of humidity regardless of geographical distances such as in the populations of Tenampulco, Puebla and Caobas, Quintana Roo. The presence of these morphotypes allows the development of conservation programmes and genetic improvement of the species of V. insignis and related commercial species.

Type
Research Article
Copyright
Copyright © The Author(s), 2023. Published by Cambridge University Press on behalf of National Institute of Agricultural Botany

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